Adjustable knockdown screen.



PATENTED FEB. 26, 1907.

J. H. GOENELISON. ADJUSTABLE KNOGKDOWN SCREEN. p

APPLICATION FILED NOV. 1. 190a. v

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No. 845,162. PATENTED FEB. 26, 1907.

J. H. GORNELISON.

ADJUSTABLE KNOGKDOWN SCREEN. APPLIQATIO NNNNNNNNNNNNNNN a.

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JOHN H. OORNELISON, OF ST. LOUIS, MISSOURI.

ADJUSTABLE KNOCKDOWN SCREEN.

Specification of Letters Patent.

Patented Feb. 26, 1907.

A li ati fil d November 1,1906. Serial No. 341,645.

To LLZZ whom it may concern:

Be it known that I, J OHN H. OoRNELIsoN, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Adjustable Knockdown Screens; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in adjustable knockdown screens; and the object of the invention is to produce a simple and inexpensive device of this nature capable of being adjusted to the height or width of a window or other opening and which may have its rails secured easily and firmly at the corners and capable of being closely packed for shipping or storing.

My invention comprises various details of construction and combinations and arrangements of parts, which will be hereinafter fully described and then specifically defined in the appended claims.

I illustrate myinvention in the accomp anying drawings, in which Figure 1 is a side elevation showing in solid lines the rails of my screen fastened together and in dotted lines one of the adjusted positions in which the rails may be fastened. Fig. 2 is a perspective view showing two of the rails disconnected. Fig. 8 is a detail view showing a slight modificationofaconnectingplate, which instead of being angled is in alinement with the rail to which it is fastened. Fig. 4 is a sectional view on line 4 4 of Fig. 1. Fig. 5 is a perspective view of a slight modification in the form of construction of my apparatus. Fig. 6 is a detail perspective view of the form of connecting-plate shown in Fig. 5. Fig. 7 is a detail view of a corrugated cornerfastening device. Fig. '8 is a sectional view on line 8 8 of Fig. 6. Fig. 9 is a detail view of a modified form of corner-fastening device. Fig. 10 is a sectional view on line 10 10 of Fig. 5. Fig. 11 is a view similar to Fig. 5, showing a slot formed in one of the rails at right angles to the face of the rail.

Fig. 13 is a detail view of a modified form of corner-fastening device.

Reference now being had to the details of Fig. 12 is v a sectional view on line 12 12 of Fig. 11, andthe drawings by letter, A A designate the rails of the screen-frame, each of which is provided in the form shown in the detail view, Fig. 2, with a transverse slot B, formed in one end and parallel to the broad face of the strip and adapted to receive a plate C, which may have a right-angled end O, or bent at an angle less than a right angle, as shown in dotted lines by letter O in Fig. 2 of the drawings. The opposite end of each rail is provided with an elongated slot D, formed parallel with the broad face of the strip and of considerable depth in order to allow the pieces to be adjusted to form a frame to fit various sized openings. The portion of the plate O intermediate its angled end and the end of the piece to which it is secured is of a length equal to the width of the strip or the width of the slot D, which it is adapted to engage, with the angled portion of the plate bearing against the outer edge of the strip. It will be noted upon reference to Fi 2 of the drawings that the end of the plate O is shown in dotted lines as bent at a less angle than a right angle, and the metal being of a flexible material will allow the plate to be adjusted to strips which mayvary somewhat in width.

In Fig. 3 of the drawings I have shown a slight modification in the shape of the plate E, which is in alinement centrally with the strip to which it is fastened, with the opposite edges flush with the edges of the strip, and an angled part (shown in Fig. 2) is dispensed with.

Referring to Fig. 5 of the drawings, will be seen a slight modification in the construction of invention, in which a plate F is fastened to the strip A in any suitable manner and is provided with an angled end F, having recesses or slots G formed in one end thereof, and in said modification the longitudinal slit K is formed at an inclination and through the two parallel faces of the strip and adapted to receive the angled end F of the plate F in the manner shown. While the slot K (shown in Fig. 5) is illustrated as extending entirely through the strip, it will be understood that this slot may be, if desired, only partially through the strip.

In Fig. 11 I have shown a slightly different modification of my apparatus, similar to the construction shown in Fig. 5, with the exception that the free end of the plate N is right-angled, as at N, and adapted to engage a slot O, formed in the strip, which slot is shown in said figure as extending only partially through the strip. Suitable fastening devices, such as a corrugated piece of metal P, (shown in Fig. 7,) may be utilized for holding the angled end F of the plate F from moving longitudinally in the slot K by said corrugated fasteners engaging the slots G, formed in the plate F, and, if desired, the staples R (shown in Fig. 9) may be utilized instead of the corrugated fasteners, the purpose of each being the sameto securely hold the parts together when they have their proper adjustment. In order to further secure the strips together, pins may be passed through the openings S, formed in said plates, and driven into the strip to which the plate is to be fastened.

In adjusting the parts together, referring to Figs. 1 and 2 of the drawings, the plates C are inserted through the slots D and moved to the proper positions Within said slots in order to adjust the strips to form the proper-sized screen, after which nails T'may be driven through the portion of the strip A which is slotted longitudinally to receive the plate M for adjustment therein, thereby securely holding the pieces together, while in the constructions shown in the modified forms the angled parts of the plates are adjusted in a similar manner, although held by fastening means Which differ, comprising the corrugated strips or staple-shaped members.

By the provision of the apparatus shown and described it will be noted that a simple and efficient fastener is afforded whereby screens may be shipped in sections and easily put together and adjusted to differentsized wind ow-openings, the projecting parts of the window-screens being cut ofi after the proper adjustments have been made. I It will also be noted that means is provided for thoroughly protecting the metallic parts from corrosion where the plate is held in the manner shown in Fig. 1 of the drawings.

What I claim is 1. An adjustable knockdown screen-frame comprising strips, each having a slot formed in one end thereof and extending entirely through the strip, a plate having an angled end. and fastened to the opposite end of the strip and of a width equal to the width of the strip and adapted to extend entirely through a slot and its angled end engaging the marginal edge of said slot, as set forth.

2. An adjustable knockdown screen-frame, comprising strips, each having a longitudinal slot formed in one end, an angled plate fixed in a slot in the opposite end of each strip, the

outer end of said. plate being bent at an angle, the projecting shank portion of each plate adapted to be fitted in the slot in the end of a strip at right angles thereto, the angled end of the plate being adapted to engage the outer longitudinal edge of the slotted portion of the strip, and fastening means for holding the ends of the strips in adjusted positions, as set forth.

In testimony whereof I hereunto aflix my Witnesses:

L. O. GILLIAM, F. X. GILsINN. 

